I am 27 year married women ,now I'm
pregnant for 2 months,this is my first baby,i have a brother he is a mentally retarded person( he can talk,do very everything by himself,understand what we are telling,respond for everything) ,my parents are sister n brother 's children,so everyone says that this the reason that my brother becomes mentally retarded , now I'm so tensed is there any problem for my child because of this,pls help me doctor,in my husband's family nobody has problem